Botany Chpt 10
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Proteins contain __________ but DNA does not?
DNA and RNA are _________ ________ consisting of long chains of chemical units.
long chains (polymers) of chemical units (monomers) that make up DNA and RNA
4 types of nucleotides that make up DNA and RNA
- (A) Adenine
- (C) Cytosine
- (T) Thymine
- (G) Guanine
Nucleotides consists of three components?
- 1. A nitrogenous base
- 2. a sugar
- 3. A phosphate group
________ are joined to one another by covalent bonds between the sugar of one __________ and the phosphate of the next.
A repeating pattern of sugar-phosphate-sugar-phosphate.
The four nucleotides found in DNA differ only in their _____________ __________.
_________and _______ are single-ring structures called pyrimidines.
Thymine (T) and Cytosine (C)
single-ring structures of thymine and cytosine
__________ and _________ are larger double-ring structures called purines.
Adenine (A) and Guanine (G)
larger, double-ring structures of adenine and guanine
How is RNA different from DNA?
- 1. sugar ring has --OH group attached to the C atom
- 2. Instead of thymine RNA has uracil (U)
Two polynucleotide strands combined that make up DNA
A double-ringed base (purine) should always be paired with a ______-_______ on the opposite strand
The model for DNA replication
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